Influence of the Infill on the Tensile Strength and the Economic Factors of 3D Printing

Abstract

This work deals with the infill of 3D printed parts. The goal of this work is to provide recommendations on how much a part should be filled. The recommendation is supported by experiment. The selected load is tensile. Therefore, the geometry of the samples was based on the standard ČSN EN ISO 527-2. Five densities of infill were selected to determine an infill rate from 0 to 100%. In addition to the tensile strength values for each sample, the work also considers economic factors. Characteristic graphs for this issue were constructed at the end of the work. They give an overview of how tensile strength, as well as time, and the cost of 3D printing, change with increasing densities of infill.